import { addResizeListener, removeResizeListener } from 'element-ui/src/utils/resize-event'

/**
 * 如何使用
 * <el-table height="100px" v-el-height-adaptive-table="{bottomOffset: 30}">...</el-table>
 * el-table height is must be set
 * bottomOffset: 30   //如果不传值默认底部app-footer高度
 */

const doResize = (el, binding, vnode) => {

    const { componentInstance: $table } = vnode
    const { value } = binding

    if (!$table.height) {
        throw new Error(`el-$table must set the height. Such as height='100px'`)
    }

    const bottomOffset = (value && value.bottomOffset) || 30

    if (!$table) return

    const height = window.innerHeight - el.getBoundingClientRect().top - bottomOffset
    $table.layout.setHeight(height)
    $table.doLayout()
}

export default {
    bind(el, binding, vnode) {

        el.resizeListener = () => {
            doResize(el, binding, vnode)
        }

        addResizeListener(window.document.body, el.resizeListener)
    },
    // inserted(el, binding, vnode) {
    //     doResize(el, binding, vnode)
    // },
    update(el, binding, vnode, oldVnode) {
        doResize(el, binding, vnode)
    },
    unbind(el) {
        removeResizeListener(window.document.body, el.resizeListener)
    }
}